/*
 * //Author: Karthic Kumar Sekar [A0092622]
 */

package sg.edu.nus.iss.team4ft.service;

import java.io.IOException;
import java.text.ParseException;
import java.util.Date;

public interface UsageChargable {
	Double calculateMonthlyUsage(Date forDate) throws NullPointerException, IOException, ParseException, CloneNotSupportedException;
}
